Internal-combustion engine.



6. W. WEISS.

Hmmm coMBusmN ENGINE.

APPLICATEON FILE() MAH. 3. i916.

Patented Apr. 2,1918.

UWE/V705' A TTURNEVS (nw/w fr. O 4 Q /V 1 V V V CARL W. WEISS, F BROKLYN, YORK.

INTERNAL-COMBUSTIoN ENGINE.

Application filed March 3, 1916. Serial No. 81,798.

To all Ywhom it may concern:

gine frame.

Be it known that I, CARL Wl WEISS, a citizen of .the United States, residing in the borough of Brooklyn of the city of New Yorlq'in the State of New York, have in-l vented certain new and useful Improvements in InternaLComhustion the following is a specification, reference being had to' the accompanying drawing, foriiiing a part hereof.

Thisinvention relates tol internal combustion engines in which air is compressedin the crank case.

The principal object of the invention is to provide for the cooling of the pitman and wrist-pin by. the inflowing' air. The single figure of the accompanying drawing isa View in.longitudinal` vertical section of an :angine constructed in accordance lwith the f'present invention.

The improved engine, of course, has all Vthe usual parts in somewhat the known relationshi each toeach. 'The engine' frame a,

, which is formed at one end inthe shape of a closed crank casin a is so cast as to receive readily a cylinder liner b which is retained fixedly in position by the removable cylinder head c.` The liner -b may have Vformed in its periphery annular shoulders In', or the like, for snug engagement with corresponding s lioulders forme in the en- In the cylinde liner b Vis mounted for reciprocation, a trunk piston Z to which is secured theusual pitlnan e as through a wrist pin d.

The cylinderliner b has cast therein at suitable points, two annular series of ports b2 and b3, the first of which series of ports communicates with the4 exhaust passage a", indicated as integral portion ofthe engine frame a and the second of which niay coinmunicate with the cooling spaces between the cylinder liner and the engine casing. The ports brand b3. just shown, are in JuXtaposition to one another so that they are closed' and opened, respectively, in quick succession b v the piston d, for a reason which will appear hereinafter. The engine frame ahas l formed therein an annular series of lugs a which are provided with ports therein and are s aced from one another around the inner ace of the engine frame and register respectively, with a corresponding series of ports b* formed in the c linder lininglb. The lugs a are ai such` a istance from one Specification of Letters Patent.

Engines, of which' Patented another as to permit to and fro therebetween. Eachoftlie ports in each lug a2 communicates with an air inlet passage as which may be forined with the engine frame a and may extend around the engine frame and bev opened to c`o munication with the'atinospherc through other ports a4 formed adjacent the lower side of the engine. It will be observed that the ports Zr* in the cylinder liner are always covered by the piston d when the Vother ports b2 and b3 are uncovered and vice versa. The inflow of fresh air through the inlet passage a" controlled further by means of a deflectoi' ring cl2 formed on the rear end of the trunk piston d and arranged with baflies by which, upon registration of the ports d4 Viii the ring with the ports b* in the liner plate, the air is directed in its travel towardtlie center of the piston, thereby cooling the wrist pin d andthe entire inner face of the piston.

Before describing the operation of the engine it is well to point out that the steam employed with the air ls derivcd'from the usual steam dome a5 in .the engine frame which, in the presentt instance` is in commufree `passage of air| nication with the chambers in the waterI o the realization ofthe desired object-s, being chamfered or of a generally conical 4form ta ering toward the axis of the piston.

1in the operation ofthe 4improved engine air is drawn in through the ports d* in the deflector ring d2 when thepiston is at the extreme forward end of its travel and this air, while serving the purpose of c oolin the piston and all surroundingparts, `is uti ized for the explosive mixture itself. During the rear stroke of the piston the entrapped air is forced around the annular cooling spaces between Ithe cylinder. liner b and the engine frame a and immediately upon theuncoverin' of the annular seriesof scavenging ports bgliy'the forward end of the piston, rushes through these ports toward the axis of the working chamber b along the curved conical.

: face of the piston.. Upon the next forward through the pipe z' is ored into the vaporizing chamber f` Where it mixes with oil introduced through the ports f. The inflow of fresh air through the ports fl* to the inner side `of the trunk piston rl upon euch Cycle 0f movements and its subse uentY rush along the outer Wall of the eylinc er liner b through the scavenging ports a insures an adequate cooling of the entire engine at. all times.

Minor details of structure may be changed :ind rearrangements of the parts made, but all such moditieutions are to be deemed within the spirit of this invention provided i they full Within the scope of the appended 1b claim.

I claim as my invention:

Tn an internal combustion engine, in oombinzition with air inlet ports, a piston to con-- trol the inflow1 of air through the ports and 20 a defleotor ring provided with bafiles carried on the open end of the piston whereby when the inlet ports are overrun air is directed into the piston to cool the piston and wrist pin.

This specification signed this ist day of Mnreh, A. D. 1916.

CARL W. WEISS. 

